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271 posts

Ultimate Geek
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Topic # 239633 27-Jul-2018 10:37
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OK so this one is a bit of a mystery.

 

Out of the blue my modded Tivo started showing no picture with RED and BLUE LEDs showing and picture resolution. No response to remote.

 

This is a TIVO that is used irregularly, but has been reliable without issue.

 

Now it is showing the RED LED on whether the drive is connected or not!

 

So I suspect a Motherboard fault and I am suspecting it's the chip.

 

I'm going to try and remove and then rebed the chip.

 

Or I may ask Simon in Tauranga to do one of his surface mount chip installs (no Motherboard cradle useed).

 

Anyone else had this fault?

 

 

 

 


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858 posts

Ultimate Geek
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  Reply # 2063745 27-Jul-2018 16:31
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What happens if you connect by RGB cable instead of HDMI?


858 posts

Ultimate Geek
+1 received by user: 53

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  Reply # 2063751 27-Jul-2018 16:35
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I actually think it is better to use a socket holder than solder it directly check the soldered legs of the IC holder for any movement perhaps one has detached from the PCB Pad, otherwise if no issues try and reseat it.  If you want I can send you a spare programmed chip.




271 posts

Ultimate Geek
+1 received by user: 74


  Reply # 2063760 27-Jul-2018 16:48
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Using component cable is the same - no image.

 

I'm just nervous about the force needed to get the chip out. But I suspect it is the culprit.

 

I actually prefer Simon's method.

 

Looking at it, you can't tell it is a repair as it is surface mount.

 

I tend to go with the fewer things in the signal chain the better. The cradle may introduce 'play'.

 

Thanks for the offer of the chip. Once this one is removed I'll take that kind offer and pay mail and a bit more..!

 

And I assume use plastic rather than metal to lever it out!


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Ultimate Geek
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  Reply # 2063861 27-Jul-2018 21:41
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Maxcat:

 

Using component cable is the same - no image.

 

I'm just nervous about the force needed to get the chip out. But I suspect it is the culprit.

 

I actually prefer Simon's method.

 

Looking at it, you can't tell it is a repair as it is surface mount.

 

I tend to go with the fewer things in the signal chain the better. The cradle may introduce 'play'.

 

Thanks for the offer of the chip. Once this one is removed I'll take that kind offer and pay mail and a bit more..!

 

And I assume use plastic rather than metal to lever it out!

 

 

I've used over 300x PLCC32 sockets in the Tivo upgrades I've done, and haven't had a single fault or failure attributed to them. Personally, I'm dead against soldering replacement PROMs direct to the board as I feel it's best to avoid any further heating than necessary. I haven't had a single defective PROM (most have been programmed here) so I think your suspicions are not well grounded. That's not to say it isn't possible, but as rphenix says, the problem could be the actual soldering of the socket to the motherboard. If not, it sounds to me like a possible motherboard issue. 





Tivo upgrades to operate with the new OzTivo EPG, support and service. Over 300 performed here so far.


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